Just check coupons out (with price alert and history). You probably want to know what is the best price?
Hand-free call, WIFI Yes, GPS Yes (Support GPS positioning), Nano SIM, Screen Resolution 400*400 Pixel, Network GSM 850 / 900 / 1800 / 1900, Bluetooth BT4.0, LTE-FDD: B1/3/5/7/20, CPU MTK6739, Camera 5 Million HD pixels, Memory DDR3 1GB, Battery 580 mAh, Bluetooth Distance 5-10m, Screen Display AMOLED 1.39inch round touch screen, EMMC: 16GB, WCDMA B1/2/5, SIM Card Independent standby, Data Transmission POGO PIN, OS Android 7.1
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. I couldn’t find any coupon for this product on latest product update.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): 502C6B, 641a5c, 42685c, TTxBG10, 2019SPEDM
(there’s a little possibility that old coupon will work)
Price history and price alert
Price history (for all/most countries) for TenFifteen F6 1/16GB Smart Watch is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).